Published: September 08, 2025
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Last updated: September 07, 2026
Comparison of carbon credits: prices and standards
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Key Takeaways
Choosing high-quality carbon credits requires assessing more than just project type or certification. Organizations should consider whether credits demonstrate additionality, measurability, verifiability, permanence, and traceability, alongside their climate impact, risks, costs, and co-benefits. As carbon contributions increasingly complement corporate decarbonization strategies and SBTi’s Ongoing Emissions Responsibility framework, a diversified portfolio can help companies balance impact, risk, budget, and strategic priorities.
In the face of the climate emergency and growing commitments toward global carbon neutrality, more and more companies are engaging in climate contribution initiatives through the Voluntary Carbon Market (VCM). In this context, not all carbon credits are created equal, and it becomes essential to understand how to compare them in order to make informed and responsible decisions.
What is a Carbon Credit?
The voluntary carbon market is based on specific methodologies tailored to each type of project, all governed by certification standards. Each project aims to reduce or sequester greenhouse gas (GHG) emissions. One carbon credit represents one metric ton of CO₂ (or equivalent) avoided or removed from the atmosphere. However, the quality, impact, and reliability of these credits can vary significantly. Therefore, being able to distinguish between different types of carbon credits is crucial.
Below are key elements to help you better understand the types of carbon credits available.
Carbon Avoidance vs. Removal: Two Distinct but Complementary Impacts
Carbon credits can broadly represent either emissions avoidance or removal. Emissions avoidance credits are generated by projects that prevent or reduce greenhouse gas emissions that would otherwise occur, such as methane capture, or improved cookstoves, while emissions removal credits are generated by projects that actively remove carbon from the atmosphere and sequester it through forest conservation, for example.
These two approaches address climate change in different ways and should not be considered interchangeable. Their climate impact depends on factors such as additionality, quantification, permanence, and reversal risk. A credible climate contribution strategy can therefore consider both carbon avoidance and removal projects, while increasingly prioritizing durable removals, by contributing to hybrid or technological projects such as Direct Air Capture (DAC), as companies approach their net-zero targets.
Avoidance credits:
These aim to prevent the emission of a ton of CO₂ that would have occurred without the project. Examples include: Protecting and conserving threatened forests, distributing improved cookstoves, and promoting renewable energy in developing countries.
Removal credits:
These remove CO₂ already present in the atmosphere, either through Nature-based solutions (e.g., reforestation, agroforestry) or more advanced technologies (e.g., direct air capture and storage).
Types of Carbon Projects: Nature-Based, Community-Based, or Technological
Beyond their climate impact, carbon credits are also classified based on the type of project that generates them:
These projects leverage natural ecosystems and carbon sinks to address climate challenges, often combining moderate human intervention with environmental benefits: Forest conservation and preservation (REDD+), Improved forest management, Afforestation, reforestation, and revegetation, Conservation of mangroves, wetlands, and seagrass meadows, Agroforestry, and regenerative agriculture.
They often provide multiple co-benefits, including biodiversity protection, water resource management, and support for local communities.
Community Projects
These projects aim to deliver strong social and environmental co-benefits to households or communities in specific regions, going beyond simple carbon impact. Examples include: Distribution of improved cookstoves, Access to clean water, Rural electrification, Energy efficiency, and fuel switching.
These projects combine a strong local dimension with measurable climate impact.
Technological and Hybrid Projects:
This broad category includes both cutting-edge technologies and circular economy approaches. These projects tackle various issues, such as: Circular practices implementation, Waste management and composting, Renewable energy deployment, Methanization and biochar production, Direct air capture and geological carbon storage. While often more costly and complex, these projects offer scalable climate solutions, though some may face industrialization or deployment challenges.
Each project type comes with its own characteristics in terms of cost, permanence, risk, and co-benefits. The key is to adopt a balanced climate contribution strategy, building a diversified carbon credit portfolio with varying impacts—and above all, to ensure the quality of the selected credits.
What Makes a High-Quality Carbon Credit?
A high-quality carbon credit is one where a ton of CO₂ is genuinely avoided or sequestered, and which meets the following criteria:
Measurability: Emission reductions must be calculated using robust methodologies and conservative assumptions.
Verifiability: The impact must be real and validated by an independent third-party auditor.
Permanence: Climate benefits must last over time, without risk of the carbon being re-emitted.
Additionality: The project’s positive impact must not have occurred without carbon finance.
Traceability: Each credit must have a unique serial number registered in a public registry.
Some credits go beyond these minimum requirements by offering additional environmental or social co-benefits—such as biodiversity conservation, improved public health, increased local income—which often align with several United Nations Sustainable Development Goals (SDGs).
The highest-quality credits can receive the Core Carbon Principles (CCP) label, granted by the Integrity Council for the Voluntary Carbon Market (ICVCM), certifying that they meet the most rigorous international standards.
What Carbon Standards and Labels Should be Used to Purchase Reliable Carbon Credits?
Carbon standards provide the rules and methodologies used to develop, monitor, verify, and issue carbon credits. However, no single standard is appropriate for every project type. Buyers should consider the specific methodology, project characteristics, safeguards, and quality requirements alongside the standard itself. Leading programs include Gold Standard, Verra's Verified Carbon Standard (VCS), ACR, Climate Action Reserve (CAR), Plan Vivo, Isometric, and Rainbow. Their project coverage and methodologies differ considerably, so the relevant standard should be assessed in the context of the project being considered.
Gold Standard :
Created in 2003 by WWF and other NGOs, Gold Standard focuses on projects with strong social and environmental impact. It primarily covers: Nature-based projects (e.g., forest preservation, reforestation), Community-based initiatives (e.g., cookstoves, water access), Energy efficiency and renewable energy. Gold Standard is known for its strict co-benefit requirements, offering highly traceable and transparent credits—often at a higher price point.
Verified Carbon Standard (VCS) :
Managed by Verra, VCS is the most widely used standard globally, covering nearly all project types. Costs vary greatly depending on the project. Although some methodologies have faced controversy, it remains a market benchmark. To enhance social and environmental dimensions, Verra offers:
SD VISta (Sustainable Development Verified Impact Standard): certifies co-benefits beyond carbon.
CCB Standards (Climate, Community & Biodiversity): often used in forest projects to ensure balanced consideration of climate, communities, and biodiversity.
These additional labels and tags help buyers align their purchases with specific priorities: biodiversity, social impact, technological innovation, etc.
The Integrity Council for the Voluntary Carbon Market (ICVCM) provides an additional high-integrity benchmark through its Core Carbon Principles. The CCP assessment considers both carbon-crediting programs and individual methodologies. Importantly, being issued under a CCP-Eligible program does not mean that every credit from that program is automatically CCP-Approved; buyers should check the status of the specific methodology and project category. The ICVCM continues to expand its assessments as standards and methodologies evolve.
How Does SBTi's Corporate Net-Zero Standard V2.0 Affect Carbon Contributions?
The Science Based Targets initiative's Corporate Net-Zero Standard V2.0, published in June 2026, reinforces the principle that companies must prioritize reducing emissions across their operations and value chains. At the same time, it introduces Ongoing Emissions Responsibility (OER), a voluntary recognition program designed to encourage companies to take responsibility for emissions generated on the path to net-zero through high-integrity climate contributions.
This means carbon credits should not be viewed as a substitute for decarbonization. Instead, they can complement emissions reductions by supporting verified carbon projects and climate action beyond a company's value chain. Under the OER framework, companies can pursue different levels of recognition based on the proportion of their ongoing emissions addressed and the approach used.
The Standard is currently in transition: Version 1.3.1 remains available for target setting until January 31, 2028, while Version 2.0 will become mandatory for new target submissions from February 1, 2028.
For companies building their climate contribution strategy today, this reinforces the value of selecting high-integrity credits that align with their climate goals, risk profile, and longer-term transition toward net-zero.
What Determines the Price of Carbon Credits?
There is no single market price for a carbon credit. Prices vary significantly depending on the project's climate mechanism, technology, location, development costs, permanence, certification, co-benefits, and stage of development.
In general, credits associated with more complex or capital-intensive removal technologies tend to command higher prices, while some mature emissions-reduction projects can be available at lower prices. However, price should not be used as a proxy for quality. For organizations building a carbon portfolio, the objective should therefore be to assess quality, impact, risk, and strategic fit of the chosen carbon projects alongside price, rather than simply seeking the lowest-cost credits.
Which Carbon Credits Should You Buy?
There is no single type of carbon credit that is universally best. The right selection depends on an organization's climate strategy, priorities, risk tolerance, budget, and desired impacts.
Nature-based projects can provide significant biodiversity, ecosystem, and community benefits, but may face risks such as wildfires, disease, or land-use changes that can affect permanence. Community-based projects can deliver strong social and environmental benefits while addressing emissions at the household or local level. Technological and engineered projects can offer highly measurable and durable carbon removals, but often involve higher costs and longer development timelines.
Rather than choosing one project type, organizations can combine different approaches to create a diversified carbon portfolio. Diversification can help balance different project risks, geographies, climate mechanisms, permanence profiles, and co-benefits while supporting a broader range of climate solutions. For more information, please contact us.
Why Diversify your Carbon Credits with a Portfolio Approach?
The carbon market offers a wide range of projects, each with different characteristics, risks, costs, and impacts. A portfolio approach allows organizations to combine projects across different typologies, geographies, climate mechanisms, permanence profiles, and co-benefits rather than relying on a single project or climate solution.
A well-designed portfolio can help organizations balance climate impact, manage project-specific risks, support a broader range of climate solutions, and align their contributions with evolving corporate climate strategies. As companies prepare for the transition to SBTi's Corporate Net-Zero Standard V2.0 and its Ongoing Emissions Responsibility framework, building a thoughtful carbon projects portfolio can also provide a flexible way to support high-integrity mitigation today while preparing for the growing importance of carbon removals over time.
The priority should always be quality first: rigorous due-diligence, transparent methodologies, credible climate benefits, and meaningful environmental and social impacts. At ClimateSeed, we support our clients in creating a portfolio of carbon projects tailored to their needs and challenges.
Please feel free to contact us to learn more about our approach.
Ecosystem Marketplace – The State of the Voluntary Carbon Market 2025. Forest Trends Initiative, 2025 (forthcoming or latest edition available).
University of Oxford – The Oxford Principles for Net Zero Aligned Carbon Offsetting (Revised 2024). Smith School of Enterprise and the Environment, University of Oxford.
FAQs
How can I assess whether a carbon credit is high quality?
Look for evidence of additionality, robust quantification, independent verification, permanence, and traceability. It is also important to assess the specific project and methodology, rather than relying solely on the certification standard.
Is a more expensive carbon credit necessarily higher quality?
No. Price reflects factors such as project type, technology, location, development costs, permanence, and co-benefits, but it is not a direct measure of quality. Buyers should assess the credit's climate integrity, risks, impacts, and strategic fit alongside its price.
Why should companies consider a portfolio of carbon projects?
A portfolio allows companies to diversify across project types, geographies, climate mechanisms, permanence profiles, and co-benefits. This can help balance project-specific risks, budgets, and climate impacts while supporting a broader range of high-integrity climate solutions.
